arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0710.2273hep-ph
收藏

低手征能下的组分夸克质量和流夸克质量

Constituent and current quark masses at low chiral energies

M. D. Scadron, F. Kleefeld, G. Rupp

摘要:

轻组分夸克质量和相应的动力学夸克质量由数据、夸克水平线性$σ$模型和红外QCD确定。这允许定义有效的非奇异和奇异流夸克质量,通过简单的加和性非常准确地再现实验π介子和K介子的质量。此外,轻标量介子$σ(600)$和$κ(800)$的质量可以直接从组分夸克质量得到。相反,手征微扰论通常采用的非奇异和奇异流夸克质量并不能对π介子和K介子的质量进行简单的定量解释。

英文摘要:

Light constituent quark masses and the corresponding dynamical quark masses are determined by data, the Quark-Level Linear $σ$ Model, and infrared QCD. This allows to define effective nonstrange and strange current quark masses which reproduce the experimental pion and kaon masses very accurately, by simple additivity. Moreover, the masses of the light scalar mesons $σ(600)$ and $κ(800)$ can be obtained straightforwardly from the constituent quark masses. In contrast, the usual nonstrange and strange current quark masses employed by Chiral Perturbation Theory do not allow a simple quantitative explanation of the pion and kaon masses.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑